/* Cadence — elevation. Depth is TONE, not shadow. Default is elevation-0.
   Shadows only on things that genuinely float: sheets, transport, coachmarks.
   The FAB gets a brand halo — emitted light, not cast shadow. */
:root {
  --elevation-0:none;
  --elevation-1:0 1px 2px 0 rgba(11,11,14,.04);   /* web only — never native */
  --elevation-2:0 4px 12px -2px rgba(11,11,14,.08); /* transport bar, sticky toolbar */
  --elevation-3:0 8px 24px -4px rgba(11,11,14,.16); /* sheets, coachmarks */
  --elevation-brand-halo:0 0 0 6px var(--halo-brand); /* the FAB */

  /* z bands — never invent one; add to this file with justification, 10+ from neighbours */
  --z-base:0; /* @kind other */
  --z-raised:10; /* @kind other */
  --z-sticky:100; /* @kind other */
  --z-transport:200; /* @kind other */
  --z-tabbar:300; /* @kind other */
  --z-fab:310; /* @kind other */
  --z-scrim:400; /* @kind other */
  --z-sheet:410; /* @kind other */
  --z-coachmark:500; /* @kind other */
  --z-toast:600; /* @kind other */

  --blur-backdrop-chrome:20px; /* @kind other */ /* under tab bar + transport */
  --blur-backdrop-scrim:0; /* @kind other */ /* scrims dim, never blur */
}